[lttng-ust.git] / src / common / ustcomm.h

/*
 * SPDX-License-Identifier: LGPL-2.1-only
 *
 * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
 * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca>
 * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 */

/*
 * This header is meant for liblttng and libust internal use ONLY.
 * These declarations should NOT be considered stable API.
 */

#ifndef _UST_COMMON_UST_COMM_H
#define _UST_COMMON_UST_COMM_H

#include <stdint.h>
#include <limits.h>
#include <unistd.h>
#include <lttng/ust-abi.h>
#include <lttng/ust-error.h>
#include <lttng/ust-compiler.h>
#include <lttng/ust-ctl.h>

/*
 * Default timeout the application waits for the sessiond to send its
 * "register done" command. Can be overridden with the environment
 * variable "LTTNG_UST_REGISTER_TIMEOUT". Note that if the sessiond is not
 * found, the application proceeds directly without any delay.
 */
#define LTTNG_UST_DEFAULT_CONSTRUCTOR_TIMEOUT_MS	3000

#define LTTNG_DEFAULT_RUNDIR				LTTNG_SYSTEM_RUNDIR
#define LTTNG_DEFAULT_HOME_RUNDIR			".lttng"

/* Queue size of listen(2) */
#define LTTNG_UST_COMM_MAX_LISTEN			10
#define LTTNG_UST_COMM_REG_MSG_PADDING			64

struct lttng_ust_event_field;
struct lttng_ust_ctx_field;
struct lttng_ust_enum_entry;
struct lttng_integer_type;
struct lttng_ust_session;

struct lttng_ust_ctl_reg_msg {
	uint32_t magic;
	uint32_t major;
	uint32_t minor;
	uint32_t pid;
	uint32_t ppid;
	uint32_t uid;
	uint32_t gid;
	uint32_t bits_per_long;
	uint32_t uint8_t_alignment;
	uint32_t uint16_t_alignment;
	uint32_t uint32_t_alignment;
	uint32_t uint64_t_alignment;
	uint32_t long_alignment;
	uint32_t socket_type;			/* enum lttng_ust_ctl_socket_type */
	char name[LTTNG_UST_ABI_PROCNAME_LEN];	/* process name */
	char padding[LTTNG_UST_COMM_REG_MSG_PADDING];
} __attribute__((packed));

/*
 * Data structure for the commands sent from sessiond to UST.
 */
#define USTCOMM_MSG_PADDING1		32
#define USTCOMM_MSG_PADDING2		32
struct ustcomm_ust_msg {
	uint32_t handle;
	uint32_t cmd;
	char padding[USTCOMM_MSG_PADDING1];
	union {
		struct lttng_ust_abi_channel channel;
		struct lttng_ust_abi_stream stream;
		struct lttng_ust_abi_event event;
		struct lttng_ust_abi_context context;
		struct lttng_ust_abi_tracer_version version;
		struct lttng_ust_abi_tracepoint_iter tracepoint;
		struct {
			uint32_t data_size;	/* following filter data */
			uint32_t reloc_offset;
			uint64_t seqnum;
		} __attribute__((packed)) filter;
		struct {
			uint32_t count;	/* how many names follow */
		} __attribute__((packed)) exclusion;
		struct {
			uint32_t data_size;	/* following capture data */
			uint32_t reloc_offset;
			uint64_t seqnum;
		} __attribute__((packed)) capture;
		struct lttng_ust_abi_counter counter;
		struct lttng_ust_abi_counter_global counter_global;
		struct lttng_ust_abi_counter_cpu counter_cpu;
		/*
		 * For lttng_ust_abi_EVENT_NOTIFIER_CREATE, a struct
		 * lttng_ust_abi_event_notifier implicitly follows struct
		 * ustcomm_ust_msg.
		 */
		struct {
			/* Length of struct lttng_ust_abi_event_notifier */
			uint32_t len;
		} event_notifier;
		char padding[USTCOMM_MSG_PADDING2];
	} u;
} __attribute__((packed));

/*
 * Data structure for the response from UST to the session daemon.
 * cmd_type is sent back in the reply for validation.
 */
#define USTCOMM_REPLY_PADDING1		32
#define USTCOMM_REPLY_PADDING2		32
struct ustcomm_ust_reply {
	uint32_t handle;
	uint32_t cmd;
	int32_t ret_code;	/* enum ustcomm_return_code */
	uint32_t ret_val;	/* return value */
	char padding[USTCOMM_REPLY_PADDING1];
	union {
		struct {
			uint64_t memory_map_size;
		} __attribute__((packed)) channel;
		struct {
			uint64_t memory_map_size;
		} __attribute__((packed)) stream;
		struct lttng_ust_abi_tracer_version version;
		struct lttng_ust_abi_tracepoint_iter tracepoint;
		char padding[USTCOMM_REPLY_PADDING2];
	} u;
} __attribute__((packed));

struct ustcomm_notify_hdr {
	uint32_t notify_cmd;
} __attribute__((packed));

#define USTCOMM_NOTIFY_EVENT_MSG_PADDING	32
struct ustcomm_notify_event_msg {
	uint32_t session_objd;
	uint32_t channel_objd;
	char event_name[LTTNG_UST_ABI_SYM_NAME_LEN];
	int32_t loglevel;
	uint32_t signature_len;
	uint32_t fields_len;
	uint32_t model_emf_uri_len;
	char padding[USTCOMM_NOTIFY_EVENT_MSG_PADDING];
	/* followed by signature, fields, and model_emf_uri */
} __attribute__((packed));

#define USTCOMM_NOTIFY_EVENT_REPLY_PADDING	32
struct ustcomm_notify_event_reply {
	int32_t ret_code;	/* 0: ok, negative: error code */
	uint32_t event_id;
	char padding[USTCOMM_NOTIFY_EVENT_REPLY_PADDING];
} __attribute__((packed));

#define USTCOMM_NOTIFY_ENUM_MSG_PADDING		32
struct ustcomm_notify_enum_msg {
	uint32_t session_objd;
	char enum_name[LTTNG_UST_ABI_SYM_NAME_LEN];
	uint32_t entries_len;
	char padding[USTCOMM_NOTIFY_ENUM_MSG_PADDING];
	/* followed by enum entries */
} __attribute__((packed));

#define USTCOMM_NOTIFY_EVENT_REPLY_PADDING	32
struct ustcomm_notify_enum_reply {
	int32_t ret_code;	/* 0: ok, negative: error code */
	uint64_t enum_id;
	char padding[USTCOMM_NOTIFY_EVENT_REPLY_PADDING];
} __attribute__((packed));

#define USTCOMM_NOTIFY_CHANNEL_MSG_PADDING	32
struct ustcomm_notify_channel_msg {
	uint32_t session_objd;
	uint32_t channel_objd;
	uint32_t ctx_fields_len;
	char padding[USTCOMM_NOTIFY_CHANNEL_MSG_PADDING];
	/* followed by context fields */
} __attribute__((packed));

#define USTCOMM_NOTIFY_CHANNEL_REPLY_PADDING	32
struct ustcomm_notify_channel_reply {
	int32_t ret_code;	/* 0: ok, negative: error code */
	uint32_t chan_id;
	uint32_t header_type;	/* enum lttng_ust_ctl_channel_header */
	char padding[USTCOMM_NOTIFY_CHANNEL_REPLY_PADDING];
} __attribute__((packed));

/*
 * LTTNG_UST_TRACEPOINT_FIELD_LIST reply is followed by a
 * struct lttng_ust_field_iter field.
 */

int ustcomm_create_unix_sock(const char *pathname)
	__attribute__((visibility("hidden")));

int ustcomm_connect_unix_sock(const char *pathname,
	long timeout)
	__attribute__((visibility("hidden")));

int ustcomm_accept_unix_sock(int sock)
	__attribute__((visibility("hidden")));

int ustcomm_listen_unix_sock(int sock)
	__attribute__((visibility("hidden")));

int ustcomm_shutdown_unix_sock(int sock)
	__attribute__((visibility("hidden")));

int ustcomm_close_unix_sock(int sock)
	__attribute__((visibility("hidden")));

ssize_t ustcomm_recv_unix_sock(int sock, void *buf, size_t len)
	__attribute__((visibility("hidden")));

ssize_t ustcomm_send_unix_sock(int sock, const void *buf, size_t len)
	__attribute__((visibility("hidden")));

ssize_t ustcomm_send_fds_unix_sock(int sock, int *fds, size_t nb_fd)
	__attribute__((visibility("hidden")));

ssize_t ustcomm_recv_fds_unix_sock(int sock, int *fds, size_t nb_fd)
	__attribute__((visibility("hidden")));

const char *ustcomm_get_readable_code(int code)
	__attribute__((visibility("hidden")));

int ustcomm_send_app_msg(int sock, struct ustcomm_ust_msg *lum)
	__attribute__((visibility("hidden")));

int ustcomm_recv_app_reply(int sock, struct ustcomm_ust_reply *lur,
	uint32_t expected_handle, uint32_t expected_cmd)
	__attribute__((visibility("hidden")));

int ustcomm_send_app_cmd(int sock,
		struct ustcomm_ust_msg *lum,
		struct ustcomm_ust_reply *lur)
	__attribute__((visibility("hidden")));

int ustcomm_recv_fd(int sock)
	__attribute__((visibility("hidden")));

ssize_t ustcomm_recv_channel_from_sessiond(int sock,
		void **chan_data, uint64_t len, int *wakeup_fd)
	__attribute__((visibility("hidden")));

int ustcomm_recv_stream_from_sessiond(int sock,
		uint64_t *memory_map_size,
		int *shm_fd, int *wakeup_fd)
	__attribute__((visibility("hidden")));

ssize_t ustcomm_recv_event_notifier_notif_fd_from_sessiond(int sock,
		int *event_notifier_notif_fd)
	__attribute__((visibility("hidden")));

ssize_t ustcomm_recv_counter_from_sessiond(int sock,
		void **counter_data, uint64_t len)
	__attribute__((visibility("hidden")));

int ustcomm_recv_counter_shm_from_sessiond(int sock,
		int *shm_fd)
	__attribute__((visibility("hidden")));

/*
 * Returns 0 on success, negative error value on error.
 * Returns -EPIPE or -ECONNRESET if other end has hung up.
 */
int ustcomm_send_reg_msg(int sock,
		enum lttng_ust_ctl_socket_type type,
		uint32_t bits_per_long,
		uint32_t uint8_t_alignment,
		uint32_t uint16_t_alignment,
		uint32_t uint32_t_alignment,
		uint32_t uint64_t_alignment,
		uint32_t long_alignment,
		const char *procname)
	__attribute__((visibility("hidden")));

/*
 * Returns 0 on success, negative error value on error.
 * Returns -EPIPE or -ECONNRESET if other end has hung up.
 */
int ustcomm_register_event(int sock,
	struct lttng_ust_session *session,
	int session_objd,		/* session descriptor */
	int channel_objd,		/* channel descriptor */
	const char *event_name,		/* event name (input) */
	int loglevel,
	const char *signature,		/* event signature (input) */
	size_t nr_fields,		/* fields */
	const struct lttng_ust_event_field * const *fields,
	const char *model_emf_uri,
	uint32_t *id)			/* event id (output) */
	__attribute__((visibility("hidden")));

/*
 * Returns 0 on success, negative error value on error.
 * Returns -EPIPE or -ECONNRESET if other end has hung up.
 */
int ustcomm_register_enum(int sock,
	int session_objd,		/* session descriptor */
	const char *enum_name,		/* enum name (input) */
	size_t nr_entries,		/* entries */
	const struct lttng_ust_enum_entry * const *entries,
	uint64_t *id)			/* enum id (output) */
	__attribute__((visibility("hidden")));

/*
 * Returns 0 on success, negative error value on error.
 * Returns -EPIPE or -ECONNRESET if other end has hung up.
 */
int ustcomm_register_channel(int sock,
	struct lttng_ust_session *session,
	int session_objd,		/* session descriptor */
	int channel_objd,		/* channel descriptor */
	size_t nr_ctx_fields,
	struct lttng_ust_ctx_field *ctx_fields,
	uint32_t *chan_id,		/* channel id (output) */
	int *header_type) 		/* header type (output) */
	__attribute__((visibility("hidden")));

int ustcomm_setsockopt_rcv_timeout(int sock, unsigned int msec)
	__attribute__((visibility("hidden")));

int ustcomm_setsockopt_snd_timeout(int sock, unsigned int msec)
	__attribute__((visibility("hidden")));

#endif	/* _UST_COMMON_UST_COMM_H */
Commit	Line	Data
67c5b804	1	/*
c0c0989a	2	* SPDX-License-Identifier: LGPL-2.1-only
15f672f9	3	*
c0c0989a MJ	4	* Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
	5	* Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca>
	6	* Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
67c5b804 MD	7	*/
	8
	9	/*
	10	* This header is meant for liblttng and libust internal use ONLY.
	11	* These declarations should NOT be considered stable API.
	12	*/
	13
67534785 MJ	14	#ifndef _UST_COMMON_UST_COMM_H
67534785 MJ	15	#define _UST_COMMON_UST_COMM_H
c0c0989a	16
fb31eb73	17	#include <stdint.h>
67c5b804	18	#include <limits.h>
57773204	19	#include <unistd.h>
4318ae1b	20	#include <lttng/ust-abi.h>
7bc53e94	21	#include <lttng/ust-error.h>
b3f60bbf	22	#include <lttng/ust-compiler.h>
c785c634	23	#include <lttng/ust-ctl.h>
67c5b804	24
11ff9c7d	25	/*
cf12a773 MD	26	* Default timeout the application waits for the sessiond to send its
cf12a773 MD	27	* "register done" command. Can be overridden with the environment
69400ac4	28	* variable "LTTNG_UST_REGISTER_TIMEOUT". Note that if the sessiond is not
cf12a773	29	* found, the application proceeds directly without any delay.
11ff9c7d	30	*/
156b0cf7	31	#define LTTNG_UST_DEFAULT_CONSTRUCTOR_TIMEOUT_MS 3000
11ff9c7d	32
751d4e91	33	#define LTTNG_DEFAULT_RUNDIR LTTNG_SYSTEM_RUNDIR
32ce8569	34	#define LTTNG_DEFAULT_HOME_RUNDIR ".lttng"
7fc90dca	35
67c5b804	36	/* Queue size of listen(2) */
32ce8569 MD	37	#define LTTNG_UST_COMM_MAX_LISTEN 10
	38	#define LTTNG_UST_COMM_REG_MSG_PADDING 64
	39
25cff019	40	struct lttng_ust_event_field;
daacdbfc	41	struct lttng_ust_ctx_field;
891d6b55	42	struct lttng_ust_enum_entry;
c785c634	43	struct lttng_integer_type;
f69fe5fb	44	struct lttng_ust_session;
32ce8569	45
249cffb5	46	struct lttng_ust_ctl_reg_msg {
32ce8569 MD	47	uint32_t magic;
	48	uint32_t major;
	49	uint32_t minor;
	50	uint32_t pid;
	51	uint32_t ppid;
	52	uint32_t uid;
	53	uint32_t gid;
	54	uint32_t bits_per_long;
	55	uint32_t uint8_t_alignment;
	56	uint32_t uint16_t_alignment;
	57	uint32_t uint32_t_alignment;
	58	uint32_t uint64_t_alignment;
	59	uint32_t long_alignment;
249cffb5	60	uint32_t socket_type; /* enum lttng_ust_ctl_socket_type */
32ce8569 MD	61	char name[LTTNG_UST_ABI_PROCNAME_LEN]; /* process name */
32ce8569 MD	62	char padding[LTTNG_UST_COMM_REG_MSG_PADDING];
9f5ade14	63	} __attribute__((packed));
67c5b804	64
67c5b804	65	/*
e7723462	66	* Data structure for the commands sent from sessiond to UST.
67c5b804	67	*/
32ce8569 MD	68	#define USTCOMM_MSG_PADDING1 32
32ce8569 MD	69	#define USTCOMM_MSG_PADDING2 32
57773204	70	struct ustcomm_ust_msg {
1ece9766	71	uint32_t handle;
46050b1a	72	uint32_t cmd;
32ce8569	73	char padding[USTCOMM_MSG_PADDING1];
67c5b804	74	union {
fd17d7ce MD	75	struct lttng_ust_abi_channel channel;
	76	struct lttng_ust_abi_stream stream;
	77	struct lttng_ust_abi_event event;
	78	struct lttng_ust_abi_context context;
	79	struct lttng_ust_abi_tracer_version version;
	80	struct lttng_ust_abi_tracepoint_iter tracepoint;
2d78951a	81	struct {
2734ca65 CB	82	uint32_t data_size; /* following filter data */
2734ca65 CB	83	uint32_t reloc_offset;
3f6fd224	84	uint64_t seqnum;
9f5ade14	85	} __attribute__((packed)) filter;
75582b3a JI	86	struct {
75582b3a JI	87	uint32_t count; /* how many names follow */
9f5ade14	88	} __attribute__((packed)) exclusion;
d37ecb3f FD	89	struct {
	90	uint32_t data_size; /* following capture data */
	91	uint32_t reloc_offset;
	92	uint64_t seqnum;
9f5ade14	93	} __attribute__((packed)) capture;
fd17d7ce MD	94	struct lttng_ust_abi_counter counter;
	95	struct lttng_ust_abi_counter_global counter_global;
	96	struct lttng_ust_abi_counter_cpu counter_cpu;
8406222c	97	/*
fd17d7ce MD	98	* For lttng_ust_abi_EVENT_NOTIFIER_CREATE, a struct
fd17d7ce MD	99	* lttng_ust_abi_event_notifier implicitly follows struct
8406222c MD	100	* ustcomm_ust_msg.
	101	*/
	102	struct {
fd17d7ce	103	/* Length of struct lttng_ust_abi_event_notifier */
8406222c MD	104	uint32_t len;
8406222c MD	105	} event_notifier;
32ce8569	106	char padding[USTCOMM_MSG_PADDING2];
67c5b804	107	} u;
9f5ade14	108	} __attribute__((packed));
67c5b804	109
9eb62b9c MD	110	/*
	111	* Data structure for the response from UST to the session daemon.
	112	* cmd_type is sent back in the reply for validation.
	113	*/
32ce8569 MD	114	#define USTCOMM_REPLY_PADDING1 32
32ce8569 MD	115	#define USTCOMM_REPLY_PADDING2 32
57773204	116	struct ustcomm_ust_reply {
46050b1a MD	117	uint32_t handle;
46050b1a MD	118	uint32_t cmd;
7f2348b8	119	int32_t ret_code; /* enum ustcomm_return_code */
1ece9766	120	uint32_t ret_val; /* return value */
32ce8569	121	char padding[USTCOMM_REPLY_PADDING1];
9eb62b9c	122	union {
193183fb MD	123	struct {
193183fb MD	124	uint64_t memory_map_size;
9f5ade14	125	} __attribute__((packed)) channel;
381c0f1e MD	126	struct {
381c0f1e MD	127	uint64_t memory_map_size;
9f5ade14	128	} __attribute__((packed)) stream;
fd17d7ce MD	129	struct lttng_ust_abi_tracer_version version;
fd17d7ce MD	130	struct lttng_ust_abi_tracepoint_iter tracepoint;
32ce8569	131	char padding[USTCOMM_REPLY_PADDING2];
9eb62b9c	132	} u;
9f5ade14	133	} __attribute__((packed));
9eb62b9c	134
32ce8569 MD	135	struct ustcomm_notify_hdr {
32ce8569 MD	136	uint32_t notify_cmd;
9f5ade14	137	} __attribute__((packed));
32ce8569 MD	138
	139	#define USTCOMM_NOTIFY_EVENT_MSG_PADDING 32
	140	struct ustcomm_notify_event_msg {
	141	uint32_t session_objd;
	142	uint32_t channel_objd;
fd17d7ce	143	char event_name[LTTNG_UST_ABI_SYM_NAME_LEN];
32ce8569 MD	144	int32_t loglevel;
	145	uint32_t signature_len;
	146	uint32_t fields_len;
	147	uint32_t model_emf_uri_len;
	148	char padding[USTCOMM_NOTIFY_EVENT_MSG_PADDING];
	149	/* followed by signature, fields, and model_emf_uri */
9f5ade14	150	} __attribute__((packed));
32ce8569 MD	151
	152	#define USTCOMM_NOTIFY_EVENT_REPLY_PADDING 32
	153	struct ustcomm_notify_event_reply {
	154	int32_t ret_code; /* 0: ok, negative: error code */
	155	uint32_t event_id;
	156	char padding[USTCOMM_NOTIFY_EVENT_REPLY_PADDING];
9f5ade14	157	} __attribute__((packed));
32ce8569	158
c785c634 MD	159	#define USTCOMM_NOTIFY_ENUM_MSG_PADDING 32
	160	struct ustcomm_notify_enum_msg {
	161	uint32_t session_objd;
fd17d7ce	162	char enum_name[LTTNG_UST_ABI_SYM_NAME_LEN];
c785c634 MD	163	uint32_t entries_len;
	164	char padding[USTCOMM_NOTIFY_ENUM_MSG_PADDING];
	165	/* followed by enum entries */
9f5ade14	166	} __attribute__((packed));
c785c634 MD	167
	168	#define USTCOMM_NOTIFY_EVENT_REPLY_PADDING 32
	169	struct ustcomm_notify_enum_reply {
	170	int32_t ret_code; /* 0: ok, negative: error code */
	171	uint64_t enum_id;
	172	char padding[USTCOMM_NOTIFY_EVENT_REPLY_PADDING];
9f5ade14	173	} __attribute__((packed));
c785c634	174
32ce8569 MD	175	#define USTCOMM_NOTIFY_CHANNEL_MSG_PADDING 32
	176	struct ustcomm_notify_channel_msg {
	177	uint32_t session_objd;
	178	uint32_t channel_objd;
	179	uint32_t ctx_fields_len;
	180	char padding[USTCOMM_NOTIFY_CHANNEL_MSG_PADDING];
	181	/* followed by context fields */
9f5ade14	182	} __attribute__((packed));
32ce8569 MD	183
	184	#define USTCOMM_NOTIFY_CHANNEL_REPLY_PADDING 32
	185	struct ustcomm_notify_channel_reply {
	186	int32_t ret_code; /* 0: ok, negative: error code */
	187	uint32_t chan_id;
249cffb5	188	uint32_t header_type; /* enum lttng_ust_ctl_channel_header */
32ce8569	189	char padding[USTCOMM_NOTIFY_CHANNEL_REPLY_PADDING];
9f5ade14	190	} __attribute__((packed));
32ce8569	191
40003310 MD	192	/*
	193	* LTTNG_UST_TRACEPOINT_FIELD_LIST reply is followed by a
	194	* struct lttng_ust_field_iter field.
	195	*/
	196
1d18d519 MJ	197	int ustcomm_create_unix_sock(const char *pathname)
1d18d519 MJ	198	__attribute__((visibility("hidden")));
ddabe860	199
8f1313b1	200	int ustcomm_connect_unix_sock(const char *pathname,
1d18d519 MJ	201	long timeout)
1d18d519 MJ	202	__attribute__((visibility("hidden")));
ddabe860	203
1d18d519 MJ	204	int ustcomm_accept_unix_sock(int sock)
1d18d519 MJ	205	__attribute__((visibility("hidden")));
ddabe860	206
1d18d519 MJ	207	int ustcomm_listen_unix_sock(int sock)
1d18d519 MJ	208	__attribute__((visibility("hidden")));
ddabe860	209
b2be0f7b MD	210	int ustcomm_shutdown_unix_sock(int sock)
	211	__attribute__((visibility("hidden")));
	212
1d18d519 MJ	213	int ustcomm_close_unix_sock(int sock)
1d18d519 MJ	214	__attribute__((visibility("hidden")));
74d81a6c	215
1d18d519 MJ	216	ssize_t ustcomm_recv_unix_sock(int sock, void *buf, size_t len)
1d18d519 MJ	217	__attribute__((visibility("hidden")));
ddabe860	218
1d18d519 MJ	219	ssize_t ustcomm_send_unix_sock(int sock, const void *buf, size_t len)
1d18d519 MJ	220	__attribute__((visibility("hidden")));
ddabe860	221
1d18d519 MJ	222	ssize_t ustcomm_send_fds_unix_sock(int sock, int *fds, size_t nb_fd)
1d18d519 MJ	223	__attribute__((visibility("hidden")));
ddabe860	224
1d18d519 MJ	225	ssize_t ustcomm_recv_fds_unix_sock(int sock, int *fds, size_t nb_fd)
1d18d519 MJ	226	__attribute__((visibility("hidden")));
74d81a6c	227
1d18d519 MJ	228	const char *ustcomm_get_readable_code(int code)
1d18d519 MJ	229	__attribute__((visibility("hidden")));
ddabe860	230
1d18d519 MJ	231	int ustcomm_send_app_msg(int sock, struct ustcomm_ust_msg *lum)
1d18d519 MJ	232	__attribute__((visibility("hidden")));
ddabe860	233
8f1313b1	234	int ustcomm_recv_app_reply(int sock, struct ustcomm_ust_reply *lur,
1d18d519 MJ	235	uint32_t expected_handle, uint32_t expected_cmd)
1d18d519 MJ	236	__attribute__((visibility("hidden")));
ddabe860	237
8f1313b1	238	int ustcomm_send_app_cmd(int sock,
57773204	239	struct ustcomm_ust_msg *lum,
1d18d519 MJ	240	struct ustcomm_ust_reply *lur)
1d18d519 MJ	241	__attribute__((visibility("hidden")));
ddabe860	242
1d18d519 MJ	243	int ustcomm_recv_fd(int sock)
1d18d519 MJ	244	__attribute__((visibility("hidden")));
67c5b804	245
74d81a6c	246	ssize_t ustcomm_recv_channel_from_sessiond(int sock,
1d18d519 MJ	247	void *chan_data, uint64_t len, int wakeup_fd)
1d18d519 MJ	248	__attribute__((visibility("hidden")));
ddabe860	249
74d81a6c MD	250	int ustcomm_recv_stream_from_sessiond(int sock,
74d81a6c MD	251	uint64_t *memory_map_size,
1d18d519 MJ	252	int shm_fd, int wakeup_fd)
1d18d519 MJ	253	__attribute__((visibility("hidden")));
ddabe860	254
d8d2416d	255	ssize_t ustcomm_recv_event_notifier_notif_fd_from_sessiond(int sock,
1d18d519 MJ	256	int *event_notifier_notif_fd)
1d18d519 MJ	257	__attribute__((visibility("hidden")));
74d81a6c	258
ebabbf58	259	ssize_t ustcomm_recv_counter_from_sessiond(int sock,
1d18d519 MJ	260	void **counter_data, uint64_t len)
1d18d519 MJ	261	__attribute__((visibility("hidden")));
ddabe860	262
ebabbf58	263	int ustcomm_recv_counter_shm_from_sessiond(int sock,
1d18d519 MJ	264	int *shm_fd)
1d18d519 MJ	265	__attribute__((visibility("hidden")));
ebabbf58	266
32ce8569 MD	267	/*
	268	* Returns 0 on success, negative error value on error.
	269	* Returns -EPIPE or -ECONNRESET if other end has hung up.
	270	*/
	271	int ustcomm_send_reg_msg(int sock,
249cffb5	272	enum lttng_ust_ctl_socket_type type,
32ce8569 MD	273	uint32_t bits_per_long,
	274	uint32_t uint8_t_alignment,
	275	uint32_t uint16_t_alignment,
	276	uint32_t uint32_t_alignment,
	277	uint32_t uint64_t_alignment,
c117e988 JG	278	uint32_t long_alignment,
c117e988 JG	279	const char *procname)
1d18d519	280	__attribute__((visibility("hidden")));
32ce8569 MD	281
	282	/*
	283	* Returns 0 on success, negative error value on error.
	284	* Returns -EPIPE or -ECONNRESET if other end has hung up.
	285	*/
	286	int ustcomm_register_event(int sock,
f69fe5fb	287	struct lttng_ust_session *session,
32ce8569 MD	288	int session_objd, /* session descriptor */
	289	int channel_objd, /* channel descriptor */
	290	const char event_name, / event name (input) */
	291	int loglevel,
	292	const char signature, / event signature (input) */
	293	size_t nr_fields, /* fields */
3d33ca1d	294	const struct lttng_ust_event_field * const *fields,
32ce8569	295	const char *model_emf_uri,
1d18d519 MJ	296	uint32_t id) / event id (output) */
1d18d519 MJ	297	__attribute__((visibility("hidden")));
32ce8569	298
c785c634 MD	299	/*
	300	* Returns 0 on success, negative error value on error.
	301	* Returns -EPIPE or -ECONNRESET if other end has hung up.
	302	*/
	303	int ustcomm_register_enum(int sock,
	304	int session_objd, /* session descriptor */
	305	const char enum_name, / enum name (input) */
	306	size_t nr_entries, /* entries */
3d33ca1d	307	const struct lttng_ust_enum_entry * const *entries,
1d18d519 MJ	308	uint64_t id) / enum id (output) */
1d18d519 MJ	309	__attribute__((visibility("hidden")));
c785c634	310
32ce8569 MD	311	/*
	312	* Returns 0 on success, negative error value on error.
	313	* Returns -EPIPE or -ECONNRESET if other end has hung up.
	314	*/
	315	int ustcomm_register_channel(int sock,
f69fe5fb	316	struct lttng_ust_session *session,
32ce8569 MD	317	int session_objd, /* session descriptor */
	318	int channel_objd, /* channel descriptor */
	319	size_t nr_ctx_fields,
4e48b5d2	320	struct lttng_ust_ctx_field *ctx_fields,
32ce8569	321	uint32_t chan_id, / channel id (output) */
1d18d519 MJ	322	int header_type) / header type (output) */
1d18d519 MJ	323	__attribute__((visibility("hidden")));
32ce8569	324
1d18d519 MJ	325	int ustcomm_setsockopt_rcv_timeout(int sock, unsigned int msec)
1d18d519 MJ	326	__attribute__((visibility("hidden")));
ddabe860	327
1d18d519 MJ	328	int ustcomm_setsockopt_snd_timeout(int sock, unsigned int msec)
1d18d519 MJ	329	__attribute__((visibility("hidden")));
ff517991	330
67534785	331	#endif /* _UST_COMMON_UST_COMM_H */